chore: merge pull request #351 from Aethersailor/dependabot/github_actions/actions/checkout-6

chore(deps): bump actions/checkout from 4 to 6

Author: Aethersailor

.github/workflows/sync-openclash-overwrite-submodule.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
           submodules: true